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globalchange

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carbon(145)
population(131)
density(97)
emissions(94)
earthquakes(80)
conservation(79)
precipitation(79)
atmosphere(78)
surface temperature(63)
velocity(59)
lakes(57)
carbon dioxide(54)
lead(52)
sediments(52)
heat(51)
petroleum(48)
nitrogen(46)
forests(45)
biomass(44)
landscape(44)
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